RE: APC Props?
Two tips:
Some of the APC 3D sizes have very wide (but shallow front-to back) hubs---make sure any washers are equally wide.
And: the APC prop material is very hard---difficult for some aluminium prop drivers to bite into it--I always cyano discs of medium wet-and-dry sandpaper to the driver and/or the prop hub--the prop can slip otherwise.